Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1971_7_6_a17, author = {L. N. Lyapin}, title = {Generalized solution of an equation with discontinuous operator}, journal = {Differencialʹnye uravneni\^a}, pages = {1108--1113}, publisher = {mathdoc}, volume = {7}, number = {6}, year = {1971}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1971_7_6_a17/} }
L. N. Lyapin. Generalized solution of an equation with discontinuous operator. Differencialʹnye uravneniâ, Tome 7 (1971) no. 6, pp. 1108-1113. http://geodesic.mathdoc.fr/item/DE_1971_7_6_a17/